:root {
  --primary: #1a73e8;
  --primary-light: #4a90e2;
  --primary-dark: #1557b0;
  --primary-bg: rgba(26, 115, 232, 0.08);
  --primary-bg-hover: rgba(26, 115, 232, 0.14);

  --success: #0d904f;
  --success-bg: rgba(13, 144, 79, 0.08);
  --warning: #e37400;
  --warning-bg: rgba(227, 116, 0, 0.08);
  --danger: #d93025;
  --danger-bg: rgba(217, 48, 37, 0.08);
  --info: #1a73e8;
  --info-bg: rgba(26, 115, 232, 0.08);

  --sidebar-width: 260px;
  --sidebar-collapsed: 70px;
  --header-height: 64px;
  --border-radius: 10px;
  --border-radius-sm: 6px;
  --border-radius-lg: 14px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --shadow-xl: 0 12px 36px rgba(0,0,0,0.15);

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.35s ease;

  --font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Oxygen, Ubuntu, sans-serif;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 15px;
  --font-size-lg: 18px;
  --font-size-xl: 22px;
  --font-size-2xl: 28px;
}

[data-theme="light"] {
  --bg-primary: #f5f7fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #eef1f5;
  --bg-sidebar: #ffffff;
  --bg-card: #ffffff;
  --bg-input: #ffffff;
  --bg-hover: #f0f2f5;
  --bg-selected: rgba(26, 115, 232, 0.06);
  --bg-table-stripe: #f8f9fc;
  --bg-table-hover: #eef1f5;
  --bg-tooltip: #1a1a2e;

  --text-primary: #1a1a2e;
  --text-secondary: #5f6368;
  --text-tertiary: #9aa0a6;
  --text-inverse: #ffffff;
  --text-link: #1a73e8;

  --border-primary: #e1e5eb;
  --border-secondary: #d0d5dd;
  --border-focus: #1a73e8;

  --scrollbar-track: #f0f2f5;
  --scrollbar-thumb: #c1c6cc;
  --scrollbar-thumb-hover: #a0a5ab;
}

[data-theme="dark"] {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-tertiary: #232733;
  --bg-sidebar: #141620;
  --bg-card: #1e2130;
  --bg-input: #232733;
  --bg-hover: #2a2e3d;
  --bg-selected: rgba(26, 115, 232, 0.12);
  --bg-table-stripe: #1a1d27;
  --bg-table-hover: #232733;
  --bg-tooltip: #e8e8e8;

  --text-primary: #e8eaed;
  --text-secondary: #9aa0a6;
  --text-tertiary: #6b7280;
  --text-inverse: #1a1a2e;
  --text-link: #6db3f2;

  --border-primary: #2d3140;
  --border-secondary: #3a3f52;
  --border-focus: #4a90e2;

  --scrollbar-track: #1a1d27;
  --scrollbar-thumb: #3a3f52;
  --scrollbar-thumb-hover: #4a4f62;
}